I think even with the broader context it doesn't sit right with me, because he could have easily made the completely serious and valid point about banks needing

I think even with the broader context it doesn't sit right with me, because he could have easily made the completely serious and valid point about banks needing to be competent at their core functions without characterizing "doing evil stuff sometimes" as "fine". Totally possible that my sarcasm detector is broken right now but it seems like he's "only half-joking" here (another of his favorite phrases).